<template>
    <div>
        <div class="search">
            <input class="search-input" v-model="keyword" type="text" placeholder="输入城市名或拼音"/>
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
                <li class="search-item border-bottom" v-show="!list.length">没有找到匹配数据</li>
            </ul>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default{
    name:'CitySearch',
    props:{
        cities:Object
    },
    data(){
        return {
            keyword:'',
            list:[],
            timer:null
        }
    },
    computed:{
        hasNoData(){
            return !list.length
        }
    },
    methods:{
        handleCityClick(city){
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
    watch:{
        keyword(){
            if(this.timer){
                clearTimeout(this.timer)
            }
            if(!this.keyword){
                this.list=[]
                return
            }
            this.timer=setTimeout(()=>{
            const result=[]
            for(let i in this.cities){
                this.cities[i].forEach((value)=>{
                    if(value.spell.indexOf(this.keyword)>-1||value.name.indexOf(this.keyword)>-1){
                        result.push(value)
                    }
                })
            }
            this.list=result
            },100)
        }
    },
    mounted(){
        this.scroll=new Bscroll(this.$refs.search)
    }

}


</script>

<style lang='stylus' scoped>
    @import '~styles/varibles.styl'
    .search
        height:.72rem
        background:$bgColor
        padding:0 .1rem
        .search-input
            height:.62rem
            line-height:.62rem
            width:100%
            text-align:center
            border-radius:.06rem
            color:#666
            padding:0 .1rem
            box-sizing:border-box
    .search-content
        z-index:1
        overflow:hidden
        position:absolute
        top:1.58rem
        left:0
        right:0
        bottom:0
        background:#eee
        .search-item
            line-height:.62rem
            padding-left:.2rem 
            background:#fff
            color:#666

</style>